Answered
Imaginary output from arccosine function when the input is close to -1
@Ali. After loading the m and n vectors from your attached NormalVectors.mat file. I find that the calculation result of theta i...

3 months ago | 1

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Solved

Find similar sequences
Another problem inspired by a question on the <http://www.mathworks.com/matlabcentral/answers answers> forum. Given a matrix ...

3 months ago

Solved

Largest Geometric Series
Extension of Ned Gulley's wonderful Problem 317. In a geometric series, ratio of adjacent elements is always a constant value. ...

3 months ago

Solved

Generate Square Wave
Generate a square wave of desired length, number of complete cycles and duty cycle. Here, duty cycle is defined as the fraction ...

3 months ago

Answered
what is power spectrum value mean ('pspectrum')
@지호. The documentation of pspectrum illustrates that the calculation processes to construct the spectrogram of a nonstationary s...

4 months ago | 0

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Find last zero for each column
Given a numeric array of arbitrary size, return the row index of the last zero for each column. If a column contains all nonzero...

4 months ago

Answered
How to change folder for "slprj" folder generation?
@Sergei. For setting up the path of "slprj" folder, you have to configure the SimulinkCacheFolder of project. For instance, my...

4 months ago | 1

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Question

What is the best practice to understand the source code of MATLAB's built function ?
I want to learn the basic theory of wavelet synchrosqueezed transform, and find that there is a built-in function wsst in the Wa...

4 months ago | 1 answer | 0

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answer

Answered
help me to fix this finveser code
syms t; v01 = 30; v02 = 25; h1 = 25; h2 = 30; g = 9.78; x1(t) = v01*t; y1(t) = h1 - (1/2)*g*t^2; y1(finverse(x1,t))

4 months ago | 0

Solved

Compute the Dedekind psi function
Write a function to compute the Dedekind psi function. The values for n = 1, 2, 3, 4, 5, and 6 are 1, 3, 4, 6, 6, and 12.

4 months ago

Answered
PMSM DRIVE EXAMPLE: where are the model's variables located?
@Stefano. The variables appearing in the base workspace is calculated from the PreloadFcn callback function in the PMSM model. Y...

4 months ago | 0

Answered
Squeeze-and-Excitation-Inception Architecture for 1D-CNN in MATLAB: Input Data Format Specification and Dimension Matching Issues Between Modules
@dachen wang. For the first issue, the documentation of convolution1dLayer states that the desired input format of convolution1d...

4 months ago | 0

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Answered
How to open 2023 models in 2025 version
@Tope Roseline. As indicated by the prompt message, the old model established in R2023 has obsolete simscape blocks which are no...

4 months ago | 0

Answered
Unable to use structName.?ClassName for VideoWriter class
I think the options.?ClassName syntax is not supported within arguments block. You should specify each name-value pair individua...

5 months ago | 0

Answered
how can I simplify this code?
function [idx,pairs,scan] = Two_Ended_Search_2(x,target) idx = find(x==target); n = length(x); LR = min(idx-1,n-i...

6 months ago | 0

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Answered
Issues creating error bar for bar figure
The problem lies in the variable Names is string array, which is not supported by errorbar function. You can use categorical fun...

6 months ago | 0

Answered
Representing an orifice whose length is greater than the orifice diamter using Simscape Fluids (IL)
I think you can realize such a nozzle using both Pipe (IL) block and Orifice (IL) block. For example, you can connect orifice bl...

6 months ago | 1

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Solved

Cumulative Count
Given a row vector of integers with repeating values (with all repeating values occuring in a single continuous run), create an ...

6 months ago

Solved

Multiply real numbers to get the smallest integers
Write a function that takes a vector of real numbers and multiplies them by a factor to produce the integers with the smallest a...

6 months ago

Answered
SVD to a matrix subset (rows)
I find there is a svdappend function for calculating SVD of matrix incrementally, such as from SVD of A to SVD of [A,D] or [A;D]...

6 months ago | 0

Solved

find powers of two
find the unique, non-repeating, powers of 2 that sum to a given non-zero integer, n example: n = 23 result = [1 2 4 16] ...

6 months ago

Answered
Why does this error occur? Error using cwt>parseinputs (line 510) Invalid number of scalar input arguments. Error in cwt (line 297) fbcell = parseinputs(Norig,TTable,varar
You do not need to pass scales argument explicitly. The scales argument is excluded of cwt function's signature. The minimum and...

6 months ago | 0

Question

How to simulate electro-hydraulic actuator system with hydraulic oil thermal effect in Simscape
I want to simulate hydraulic actuator with hydraulic oil thermal effect use Simscape. I find there is an example model Close...

6 months ago | 1 answer | 0

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answer

Answered
Unexpected results using SVD to separate components that make up a function
As far as I konw, the SVD of a matrix P is equal to the summation of rank-1 components. Since the matrix is not rank-1, I th...

7 months ago | 1

Answered
How does the type of solver (fixed vs variable step) affect reinforcement learning in Simulink environment?
You can use Simulink Debug Functionality to step through the simulation and examine the output of agent.

7 months ago | 0

Answered
How to patch the area under curve for a polarplot?
There is a similar question in https://ww2.mathworks.cn/matlabcentral/answers/451422-how-to-use-patch-fill-on-a-polarplot, this ...

7 months ago | 0

Answered
Is my CNN Correct
You can use analyzeNetwork fucntion to obtain more details of your neural network layers = [ sequenceInputLayer(1)...

7 months ago | 0

Solved

Check Bertrand-Chebyshev's theorem about prime numbers
Historical context Bertrand's postulate, also later known as Chebyshev's theorem, is a very important theorem in number theory ...

7 months ago

Solved

Check p = 6n +/- 1, the generic formula for odd prime numbers greater than 3
Problem statement For all odd prime number p greater than 3, there exists a positive integer n, such that p = 6n +/- 1 : ...

7 months ago

Answered
Vectorizing DAE with strong State Dependance Mass matrix
The Vectorized option in odeset means that your DAEs can be writen as , apparently your DAEs can not be expressed as separable f...

8 months ago | 0

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